I have a 98 Sportster 1200c. I’m not sure which category to post this on as I’m not sure if it’s a fuel or fire problem. I was stranded 15 minutes into a ride and couldn’t get it restarted til it cooled down. I ended up replacing the ignition coil, which solved my problem. In addition, I replaced the plugs, and wires and the air filter. It ran great for about 250-300 miles, then mid ride, it started missing and bogging down about half throttle and higher. It backfires a lot, then catches and revs for a few moments, then misses and backfires and bogs down again. Since the problem, I double checked the connections connecting power to the coil and inspected wires. Then same from the coil to the plugs. I drained the gas, replaced the fuel valve filter/screen in the tank. Replaced the plugs again (one looked a little cooked) did an oil and oil filter change. Used a fuel additive (octane booster) with the new fresh tank of gas and still my problem persists. Please help me diagnose this. I can’t keep dumping money on “maybe this is it!” Sorry this is so long, thanks for your time.