Re: front sprocket cover
stop using allen keys and get yourself a set of allen sockets (preferably 3/8 or interchangeable 1/4 sets) or a set of T handle. same goes for the screws on Jap bikes as they are not philips but JIS.
if you have a dremil then you can chamfer the end (each flats) of a next size up and hammer it in. btw those "bull nose" T handle are good for this.
its not the fit of the key that causes problems but the leverage on the key.
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