Hi All,
The gasket SRM supply is an A65 one, these have the mounting studs farther apart for the 3rd stud
its neccessary to fold or cut this to avoid the springiness(??) of the material pushing the gasket towards the rear wheel
The gasket holes are a loose fit on the studs
You may ask what difference this makes ????
Well!!! Apart from the oil holes being somewhat misaligned
If theres the modified ball and spring setup fitted, which has the ball seating on the back of the pump
the gasket can interfere with the ball seating properly
Wet sumping is then inevitable
These are the reasons I make my own oil pump gaskets, individual to each crankcase, as the oil holes can vary a bit!!
All this was learned the hard way
HTH
John O R