Having been let down and messed about with 2 of the broads based testers I took our boat to Boulters in Horning, Keith Boulter took about 2 1/2 hours, it failed. as Keith went through the boat he explained what had failed and how it could be rectified had no complaints and they were happy ti do the work I was unable to do. If you need a BSS test give them a try.
Rob in.