Re: tie wraps
Regular zip ties leave a gap that can eventually lead to a leak. The ones DHP mentions have flanges that fill that gap. Mercury offers those as well (54-816311 or 69355). If you can't get those, you can use regular zip ties, they did for years and some brands still use them. The others are just a lot better. What I've done in a pinch is to use two smaller zipties on each connection, placing the heads 180 degrees apart.