Thanks norseman i will check them out .
If its any help, I connect mine to the tyre first then start the compressor. When finished, I do the reverse, stop the compressor then disconnect from the tyre.The T-MAX has the same fiddly end . Instructions are a bit naff , in the book it says start pump and then connect to tyre , on the box it says connect to tyre first . I can only guess what it means is start pump if its getting upto its max 150psi to relieve the strain . Will try it out tomorrow and see what it dose .