[Trev140_0]

I will be hanging on to the old piston head. Sorry.

Yes the silicone grease may have acted like a Band-Aid, but my gut is saying something else.

The nozzle is made with injection molding. With this process, there can be shrinkage either with the part or the cavity.

So what I am saying is the clearance between the piston o ring and the plastic cylinder is not exactly a tight tolerance set up. Especially amplified when you are trying to make an air seal.

I want to see what the size of the new piston head is. As well as OD of the head vs Stock.

Will get out gage lab here are work to measure this. They can measure 0.0001 of an inch all day long.

Will let you know the spread if it is reportable.

Tomorrow I will bring the cylinder in and get them to pin check the ID of it for size as well.