I think it warrants a rebuild. IMHO, $30 to find out if it fixes the problem far outweighs $400 for a new one. Plus, if it can't be fixed by the rebuild kit, you can easily sell the old one for $30 all day long on ebay in non-working condition. No harm nor foul, just a few hours time delay to see if the rebuild works.
If it's a penny for your thoughts & you give me your two cents, what happens to the other penny? Taxes, the democrats tax everything!!
1990 Maristar 210
In the market though...