hope im in the right forum, ive got a reallytricky t- piece to put into my central heating pipework, tricky meaning its hard to get to, i noticed that the tectite push fit is the same price as the yorkshire fitting, but it would be handy if i could twist the fitting like you can on a hep20 fitting once i got 2 ends in, can someone tell me if you can twist the pipe once you have pushed it home, and has anyone been let down by these fittings...cheers.