I just installed a airdog ll about 3 months ago along with a new VP44 I bypassed the original fuel filter canister ,Now I would like to utilize the canister with the water in fuel sensor and the fuel heater mostly because winter is coming upon us soon here in Michigan ,Right now I have a 1/2 line to the VP44 I would like to install a reducer from 1/2 inch to 3/8 and install right to the top of canister and come out of the outlet with 3/8 down to the VP44 is this possible and if so where can I get these fittings ?

I just brought home a alluminum tube the same diameter 1/2 ID it fit snugly into the corrugated flex tube that AD supplied, I used new fuel injection type hose clamps that work great I ditched the nylon tube I am satisfied that I have a very good seal now . The engine return line has a short rubber hose with a quick connect I also changed the hose clamp on that . Dose the return line that come from the AD and the engine just dump back into the tank? Reason I ask the 2 internal flex lines are cut off the TEE and the TEE was completely removed and the 2 lines just hang there. My next Item is to remove the quick connect to the AD on the suction side and on the return I just don't trust them ,I am running out of things to change . Can hooking up the fuel canister cause these hard starts now?:banghead:

Thanks for all the input everyone , like I said drop the tank and pulled the fuel module I hooked a air hose to the suction side of the module and plugged the end of the pick up line and submerged into a 5 gall on of water and pushed about 5lb of air through the line and found 2 air leaks one outside the module at the aluminum suction fitting supplied by airdog where one piece screws into the other and 1 leak at the plastic corrugated tube where the hose clamp connects the the aluminum fitting I guess the hose clamp cut the tube ,anyway I put all back together primed the system and it fired up now I will let it set over night to see if it looses its prime ,it used to start up with 1 crank of the starter but when it got to half tank it got worse we will see I will chime back latter in the week see how far I can go

Interesting...