Many thanks Ian. I'm following your advice that MQ may be cooler working than PQ, and so I've mixed Ansco 103 as per Anchell, with 0.6g KBr/l stock and 0.25g BTA/l stock. I diluted it 1+2 and will report the results later on today or tomorrow. Next in line I'll try PQ as in ID-62 and/or or a BTA enhanced DS-14, to try something different that also has claims to being cooler working. Fingers crossed.