Mine's about 35mm back from the LE and flies very nicely like that, so yours ought to be fine now, Howard.

Helge, the Blue Pants is a nice flyer and ought to go well with your engine, but I wouldn't discount the Peacemaker. There's a bit more work in building the Blue Pants, although it's not exactly complicated. Also, you'll probably have to make your own tank for it, and once it's installed and the fuselage is complete, you're pretty much stuck with it. When the engine is a bit of an unknown quantity, it's nice to be able to adjust or change the tank, and this will be quite awkward with the BP. You could always put a hatch on the LHS, but that's more complexity; besides which if you build as per the plans, the back of the tank sits in a cutout in the wing LE sheeting, which makes adjustment/removal harder again. Whereas the Peacemaker is a much simpler build, being a profile fuselage, and it's very easy to do whatever you need to with the tank to get a good engine run.

Anyway, they're both good flyers, so good luck with whatever you choose to build.

Steve