Hi Rikk,
My engine mounts appear identical to yours. That's how I knew you had a Robart kit. My motor mounts are however, more like a doubled bulkhead and box set-up. I thought this necessary to deal with the power and vibration of the DA85s (for which they have a deservably strong reputation....which I can neither confirm nor deny....yet).

My model also has the same "bayonette" style wing panel and rear boom servo mounts as yours. I have no concern with either approach. Perhaps Kram can comment on his experiences (Mark, are you lurking about??). Personally, I would not put the elevator and rudder servos in the tail of the boom. With all that engine weight up front, I don't think servo weight would be an issue, but why invite CG problems?I have no reservations about a pushrod and/or pull-pull set-up from the stock servo mount position. This model is a BIG, HEAVY warbird, so I doubt if I'm going to need the throws a direct drive servo would provide in a tail mount. I've no (intentional)plans to 3D my '38.

Having just received my (upgraded) DA85's and custom JTEC mufflers back from the vendors, I haven't had a chance to final check their installation. When I do get around to seeing if the JTEC execution of my mock-up muffler actually DOES fit wholly inside the cowl, I'll take some pictures and post them here in the thread.

Good luck with the refit, Rikk. I'll stay tuned to see how it all turns out......

Regards,
Lynn