Depends on how many rounds you are adding. If +2 stock spring is usually enough. To make sure, I always use Wolff +10% springs and have never had an issue.
If adding more than 2 rounds, check with the company you are buying the base pads from and see what they recommend.
Replace the control. R8184G 4009 Should stop the issue. You can hear it dropping out. If it was the pump coupler the motor would continue to run but the flame would drop out.
When you change the control, change one wire or set of wires at a time to prevent screwing it up