[Megadan]

To wrap up the piston side of things, after waiting a rather long time for the bearing to get here I can now confirm all I need to do is mill the top of the 038 piston to set the squish gap to exactly what I need and window the piston. The 038 bearing is exactly the perfect size for the rod end. It does loose a little bit of bearing surface area as the rollers are a tiny bit smaller than the wider 046 bearing, but I don't thing this will be an issue.