Thanks John,
Diemech is a Florida-based rebuilder/seller of the Walter turbine engine. He does some added stuff to improve the engine on rebuild, etc. We spoke with him at length at his exhibit-EAA AirVenture 2008.
Some news that year was that Walter in the Czech Republic and its sister company Prague Casting Services was purchased (certain assets) by General Electric in 2007, now Walter Aircraft Engines GE Aviation Czech s.r.o. Walter had delivered 4,500+ M601 turbine engines by 2007 of all versions used in 33 models of aircraft. Walter established in 1911 has been building aircraft engines since the 1920s. TBO of any M601 engine is limited by flight hours, equivalent cycles or calendar time up to 8 years, whichever comes first. Walter's exhibit in the Czech Republic aviation exhibit gave us a lot of freebie goodies.
The P&W(C) PT6A guys visited later at their EAA exhibit dissed Walter to us-probably a sign they didn't want/like any competition, however slight. The PT6A is the most reliable aircraft turbine in the business.