then warm the whole joint to stop warping then wet the joint and check the angle again. Then finish the joint from 8-4o’clock and 10 to 2 o’clock, then 8 to 10 o’clock and 4 to 2 o’clock. you can add a little more filletto the joitn to pull it slightly in that directon until you can see its spot on angle. Then stick in hot water for 30 mins scrub the flux off and tidy up.
Still square and a pretty tidy joint :¬)
Time to take a brake. line up and tacking next time.