Hi David & Trev
Thanks for your replys sorry i did not give enough information i am new to this forum thing.
anyway just to let you both know and for information for anybody else who has same sort of problem.(CHECK ALL PARTS ARE CORRECT AND WERE THEY SHOULD BE AND DONT ASUME THEY ARE FITTED CORRECTLY)
i have a 1958 A10 pick it up end of july 08. Clutch and gears have never been working well, the problem with gears were very hard to change and grinding in 1st gear & clutch slipped alot. I explained before the gear selector rod had come out about 2 inches and this was why gears were so hard to change, so i opened up gearbox and pushed rod back in and secured it with grub screw on back of gearbox, i had to remove the clutch to get to the grub screw and also look at clutch, it was so bad it needed changing so ordered a new 4 spring clutch and fitted. any way back to the gearbox while it was apart i took all parts out to have a look and make sure everything was ok, wrote down how it all came out, checked it all over and seamed in really good condition so i put it all back together the same way i took it apart (my mistake). as before grinding in first gear so stripped gearbox AGAIN and on closer inspection of how things went together following the BSA spares book and Haynes manual i found out whoever put gearbox together before, had put the kickstarter ratchet pinion sleeve washer (67-3161) between layshaft gear (67-3199) and layshaft gear bush (67-3093). so i put gearbox back together following parts manual, and with new 4 spring clutch fitted 10.30pm last night took it up the road for a quick spin and gears worked well and no grinding and new clutch worked well bike pulled like never before that was so lovely, may have to adjust clutch slightly but it was late and i was tired so will do this another day.
hope this information is useful to others.
just want to say that from reading information on this forum helped and made me think about the problem a lot more. thanks once again i am glad i found this forum.
Iain