Just a thought,and I have had this happen to me before.Have you gave your brush a good cleaning lately?I had a similar situation where my brush appeared to be clean and my lathers were sub par,cleaned my brush well and was back into buisness.Other than that,I start with a dripping brush and tons of load time with Stirling soaps,works quite well for me.Good luck getting it sorted out,Stirling is a fantastic soap!!!