[Doug Zielke]

Simon,
Your situation replicates my own almost exactly.
You don't specify the mileage (and type) of the motor, but if the total is not too high, I would suggest you do a top-end rebuild.
That is what I did, and the motor is running superbly, without a doubt.

I can't begin to tell you how valuable Waynes new book will be for you. After studying it, you will find the confidence to D-I-Y. This will help you save some money, but you will also have more control over the work.

If you have specific questions I could help with, please e-mail, and I will do my best to give you some answers.