Remember, the boat probably got 30-40 hours the first year, 20-30 hours the second year, maybe the same the third year. As others stated, at 199 hours over 25 years, it sat often
With any new to you boat, you have to do all the maintenance the prior owner didn't do.
Rubber bits run off a calendar regardless if the boat is used or not used
Change them
the issue is the amount of oil and contaminates in the casting make it nearly impossible to weld.
the part has to be hot-tanked, baked, re-hot-tanked, then ground out.
then welded