A pack of the beta igniters made it into my glue-stained hands, so I decided to put them through the acid test of clustering using my trusty old Semroc Saturn 1B. All four motors ignited successfully, although I admit that the igniters were prepared and installed obsessively, with continuity checks taking place before and after installation. I also inspected each motor before launch with a magnifier to make sure that no errant bits of clay were blocking the nozzles.

The new igniters are an improvement, but they are not Q2G2s.

James