Nice picture and great rockers!

I thought W2 rocker shafts were offset drilled?

As the valve spring pressure increases the roller needs to be nearer the centreline (obviously).

It will start inside the centreline span 'outwards' across the centre and finish slightly inside again.

The longer valves seem to mess up this arc across the valve, so when you raise the shaft it pushes the rocker further out and making it worse.

The rocker post geometry 'angle' will always do this with 15 degree valves...

Shaft slightly 'up and back' as the previous poster has said and lash caps makes the problem worse! spank

Last edited by Gtxxjon; 12/11/21 06:12 AM.
Carpe diem, quam minimum credula postero, thanx Horace!

There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...