A picture of the updated Diana piston with the new crimp.

[look no hands]

With respect ...

They are probably more interested in their sales figures, and profits, at board meetings than a few posts from a few owners on internet boards who would ideally love the pistons to be fully machined and perfectly round.

That's the problem with every company who makes whatever, look how long it took HW to kind of fix the 99, if Walther can make the same style of piston (central rod) and not have any problems with it then surely Diana can do the same, if you look on the Sportwaffen Schneider site, you can pick up a new Walther LGV piston with bearing and seal for 33 euros, now to me that's pretty cheap but what must it cost Walther (or whoever makes it for them) to make? considering S.S. buy them in and have to sell them to make a profit and the same goes for Walther selling them, they still have to make a profit, so it can't cost heaps to make a good quality piston which ain't held together with crimps, even BSA managed to do it with the Airsporter for christs sake.

Pete