I use Beseler 45 VXL and MXT enlargers and must say that the Beseler 3 lens turret is no Durst. I find it impossible to maintain alignment and adding another adapter piece into the mix would only make things worse. Given the low cost of enlargers, I solved the three lens turret issue by using three enlargers, each with a dedicated lens and lens board which maintain alignment much more reliably.

I would be curious to know if your setup maintains alignment, but mine sure won't with a turret.