[TurboRoadster]

a hand impact driver is the Only way to go re phillips screws stock on Brit or jap bikes .. for removal and installation ..

discount tool catalogs have them cheap, or try Sears or larger hardware chains ..

they usually come with 2 straight & 2 phillips bits, use the larger phillips & a big hammer ..

then, do yourself a favor & see an aftermarket Brit supplier for allen screw sets for all 3 of your covers ..

.

I agree...one of the best tools ever for tore up and difficult screws of all types.