JRC this is not a dig but instead of doing the above maybe you should be at the customers with your test gear, you say that you cant devote too much time to this fault due to your busy schedule, but sometimes you have to switch your phone off and deal with the customer and their problem until it is resolved. A business can take years to build but can be destroyed in no time at all / remember you are sometimes only remembered for your last mistake. I get the impression from nearly all your post's that you are trying to do too much to fast, slow down and take care of the customers that you have 1st before you chase after new ones.