Tbh unless their access goes server end they probably won't be able to tell either, those of us with IT knowledge might be able to guess but without...
Whereas of course the first series Diana 58 bolt actually cocks the trigger and as you know from your own one, the Military Pattern bolt is a dummy....
My tx200 piston is standard so short stroked already .....the walther piston goes in a treat and is roughly the same stroke ....just wondering about...
From memory the LGU piston has a longer latch rod giving a shorter stroke. The latch end is very slightly different from a TX but engages on the top...
Here's the dismantled version. Filters, cooling fan/pump/system, pipework,control panel, gauge. No, play in big ends, picking up of pistons, scoring...