I have herd loads of issues with low profile Apex dumps and only 1 on sitec. I had a sitec and it never let me down. I had a low profile Apex and it did. My new suit is an 03 and it has a Low profile Apex which works fine but leeks all the time and I do seem to need to adjust it a lot but maby that me (and I also have a cuff dump)
I understand that folowing loads of complaints 03 are binning the use of Apex low profile dumps
Fitting the sitec was very easy and it never leeked. It was very easy to purge manualy though I only ever did this to try it out. It was a fit and forget item.
ATB
Mark Chase