Steering issues 99 sv650 s

Right, for those who havent read the back end of my caliper overhaul thread, here's the issue:

Front brake calipers were overhauled, new pistons, seals and pads, along with new SS brake lines and fresh Wurth DOT4 brake fluid.

I took the bike on a test ride, about 40 miles or so, to market rasen and back, and on the way back, about 30 miles in, i developed a sudden issue with the steering. The easiest way to explain it, is that if you were going round a corner/bend, and you turned the wheel slightly to the left, the bike feels like it wants to push itself to full left lock, and fold in! As a result, i have to fight the bloody steering as i go down any road that isnt straight.

The tyres are fine, both michelin pilot powers, rear is pretty much new, front is about 2/3 worn. All bearings are fine, with no excessive play, and alignment is fine. There was NO issue BEFORE the caliper overhaul, so i think it has to be brake related.

Also, the pads aren't rubbing on the discs, the fluid is at the correct level, and there is no air in the system.

Sorry for the essay, but i want to eliminate things i know arent causing the problem before people suggest them.

Anyone local, if you want to ride the bike to get an idea of what im on about, feel free.

Any ideas are appreciated

Thanks!

Maybe something is misaligned, I've heard about people taking front apart, and had strange feelings first time out afterwards, been cured with loosening the front up and retightening everything. Check play on front wheel bearings while your at it. Did you use a torquewrench and the spesific torquesettings when refitting everything?
First thing might be to recheck all the bolts to check if your forgot one.

Do you think it is possible that having incorrect torque settings could be causing the issue??? Generally the torque setting i use is 'my arm hurts', but this wouldnt explain why it didnt start until 30 miles after starting to ride, and the only bolts on there are the ones for mounting the calipers... would they be likely suspects for screwing steering up?

Brakes shouldn't affect the steering at all.

Did you have the forks out or have you had the yokes undone at all?

Nope, the only thing that came apart were the calipers and brake lines. Nothing at all was touched.

No, if the caliper bolts where the only ones you touched, you wouldn't get that from just them. If something else isn't a bit loose, then you might have moved something when untightening or tightening.
Check wheel bearings atleast.

When you say that the tyre pressures are ok, what are they? And does it just happen when turning left?

Somehow I think the brake hoses on the front end are being compressed a bit.

Have you routed them same as the OE ones?

Are the lines the same size as the OE?

It does sound to me you have some part of the bike coming to connection with the hoses when you go left.

If it was a problem outside of that, it would effect the whole bike.

Not just one side, routing and length has to be right.

I am not sure what the tire pressures have to do with this problem.

Please tell us what thinking has got you to the brake lines causing the problem?

[muzikill]

Take the weight of the front of the bike and do the steering lock to lock test also visually check the slack on the new lines with the weight off if the are tight that could be the issue under load.

Some pics of the routing?