I got a 4180 carb and at the accelerating pump I got a leak I wound up putting in the wrong screw so I had to retap the hole put a heli coil for 8 32 screw and now that its tight it has a leak don't have a lot of funds right now so I'm tring to find a solution that is not going to cost to much and forgot the count on pri needles and I got a backfire as of right now and not sure what adjustments need to be made or locations of what to adjust if anyone got some solutions as far as help please let me know I need to get back to work and its hard to do without transportation. Thank you to whoever is able to help

 

First of all is the Accelerator plunger tore? Second on a 4180 there is no Anti-Backfire protection unless someone added it. A backfire will blow the Power Valve every time. 4180 uses a two stage valve that cost $30+. With a blown P.V. you will have a flooding situation.
4180s have air/fuel adjustments screws but they are covered with plugs & are not suppose to be adjusted IE EPA.
Craig