I, too, have a WH 1928 which did not have any issues, but I became apprehensive of firing it until after I got it back from PK after a year wait. I no longer worry about the TSMG beating itself apart.
nice videos, glad you had fun too bad the RO had to tamper the experience by hovering you are welcome to fire my TSMG if you ever pass through north Texas
A buddy just contacted me about an 'unfired' M1A1 (s/n 333731) which someone he knows found in granddad's attic; unfortunately they are 99% certain it was never properly registered, although they will nevertheless check its status with ATF NFA Branch. Apparently granddad had owned a depot store and bought it out of a GI's truck in 1946; it has been wrapped in wax paper ever since...
I've had some repro Crosby L drums for over a decade and just this year finally started using one of them with my WH 1928 TSMG. This second range outing I noticed a little bit of the grease which PK had previously pumped in there for me begin to seep out a bit around the edges inside the drum; is this anything of concern? I have filled and wound and used this particular drum maybe a total of 8 times now...