Cuppa what micron are you running for your pre .I've just finished doing mine about a half hr ago and am running 30 micron in a filter water separator in a fuel manager unit .Went the whole hog and installed a primer bulb between tank outlet and filter which allows a quicker bleed of both filters ,the bulb is 10 mm or 3/8 brand Scepter marine p/n 05869 and got it from Road Tech Marine .Not all bulbs are diesel suitable .