Matt Winterbourne was the guys name on FB who we had to do the 90 for that Chell had f##### up with grease.
The 80 airmasters he's just had his hands on left chell without a piston seal. So was slamming up against the cylinder. The port was too big, so simmo has had to drill it, tap it and plug it with a grub screw and re-drill it to the proper size.
These are facts and should be aired IMO.
Fozzy