I look forward to those results. I assume you've already stumbled across the "4 Bearing Technique" in the SH5 forums? If not, do a search for 4 bearings technique there. I think it may be the traphezoidal technique you are referring to. To be honest, I've tried to learn it several times but felt like I was back in calculus or advanced geometry class and I gave up....because subsims are about having fun, not doing complex math problems.
If you can simplify the process I'm all ears though.
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