hurricane

hi new here so go gentle, ive an 98 (s reg) sv650, non faired version, i love it too bits prefer it to my 2000 R1, but seems to have a problem, i have to mention mods dont i? ok, leovince exhaust full system, k&n filter thats it i think, anyway seems to have the water in carbs thing, ive modded the fuel tank breather that tends to kink, drained the carbs once....but problem still seems persistent.Ive spoken to the local suzuki garage, who agree its the problem, (loses power as if only running on pilot jets....stop bike wait few minutes and problems gone...for a while anyway,i use bike alot at night and in rain etc...)i fitted new v rated plugs just before i spoke to the garage....anyway, is this just a case of offing carbs stripping and cleaning, or is it /could it be something else?Seems to run fine during warm daylight riding with the occasional dose of the above...any help would be massively useful and much appreciated..