I don't have a lot of experience with profile models so am not sure where to orient the tank relative to the spraybar orifice, which I presume is the critical reference point. I know it makes a difference but can't recall if the tank should be slightly higher than the center of the venturi, or lower, or maybe centered. Motor is a side-mounted LA25 with venturi-mounted OS NVA, 3.5 oz metal wedge tank, uniflow plumbed, presumably with fuel pickup at rear corner of wedge, running ram air (not muffler pressure). Operation will be near sea level at all times. I checked the archives and was surprised not to see anything apparently addressing this. I probably just missed it.

Hi Pete:

It would indeed be for Stunt 25. I can't seem to get pictures to post here but will try again tomorrow. I had the tank height analysis exactly backwards, as it turns out.