Originally Posted by ol' grouch

I haven't rebuilt an engine in years. Elderly eyes, hand tremors and so on make it nearly impossible. On the other hand, the major tune up I expected to take a couple of weeks actually took nearly 2 1/2 months. I found broken bolts in the heads to drill out, failing parts that hadn't failed, yet, and I had just retired and it was a hot summer so I didn't push it as hard as I would have when time was short.

At 135K you still have a solid engine that may just need some attention. Find a small shop and have them do a vacuum check and see what all you might need. I suspect you might just need the intake retorqued. Don't tell them the problem, just detail the symptoms. That way they will look and not just throw parts at it.