I was considering the brute force and patch up method but didn't want to do that until I had at least a 2nd opinion. Thanks for getting back, I will let you know how it turns out.
Been slightly leaking for years, dribbled over the light fitting which had an integrated fan. All rusted through so I removed the light/fan and the cowling to find this plastic plate (Picture Supplied). I can't get this to come off, have removed the bolts that I assume were holding it up. The long b...