I do know of good mechanic in NE Ohio...you!
I recently rebuilt the 2.25L diesel in my 109". Had the same / similar issue you have. I pulled and rebuilt the head, popped out the pistons to re-ring them and hone the cylinder bores. I am a novice driveway mecahnic and had never worked on a diesel and it was easy. Buy the green Land Rover Diesel Service manual. They are a bit pricey...but worth thier weight in gold and very easy to follow. No major special tools required, just organization and cleanliness. This also gave me the opportunity to replace the rod bearings, rebuild the alternator & starter and replace the water pump, radiator, hoses, gaskets, injectors, etc. I am a 'while I'm in there' kinda guy, and now I know the status & age of all those components. The whole project took about 2 weeks, working a few nights a week and weekends. Now my 2.25L runs like a champ...okay it's still a lump. But it is as good as can be for what it is.
...and now to answer your question
D.A.P. in Vermont has every bit and bolt you will need. I got everything I needed from them. Give them a call and they will set you up. They also have a great website with exploded view parts lists to get started.
Got any questions just hollar... cheers!