The bond of achromatic doublet cam1/cam2 went down without a hitch. Cam 1 is a CaF2 element and Cam2 is an i-line glass from Ohara. The bond with Sylgard-184 looks clean.
Today Marin Anderson and I planned to bond collimator 1 and 2. Unfortunately, collimator 1 is AR coated on both sides. I've put a call into the vendor and need more information to proceed.