I can see whay the speed is a problem, but the sash windows have 4 small strips and 2 larger strips, then the other windows are all georgian, so it was priced for trad work, so if she has seen me do it in 20mins, now its under half, she prob thinks she is getting half a job.
I dont understand people that dont like us doing a quicker job, after all, whatever line of work you are in, you would welcome something that is going to make your life easier and do the job faster, but wouldnt expect to reduce the cost to the customer just because it is completed faster.
Unfortunately there are some very small minded short sited people who will never be happy.