Couple of things, is your pump level or below bottom of the fuel cell? 20 lbs at idle isn't considered low, it's about average. The #39 nozzles should be big enouh for the application. One of the problems is that the leakdown is too high, it should be 20/24%, set the airgap on the butterflys at .005. With -1 pump, you're going to need a larger return pill between .110 and .140. i would definately run a highspeed leanout with your pump pressure, set it at 65 lbs. With the above settings it should idle good and have good throttle response.
I just setup a 3 3/4" toilet bowl i think they are 1140 cfm, it likes 22% leakdown and .065/.070 pill with a (0) pump.
About shipping to Canada, go to ebay motors, and put in hilborn injection, there are a number of sellers on there selling pillls and i sure will ship to Canada, via USPS.
Zip.