The engine of my Ximango is reaching TBO (1200 hrs. for my old 912). Has anybody experience with engine overhaul an can give me advise? I am in contact with Lockwood in Florida and Rotech in Western Canada. Any comments on these two shops? I'll get a propeller overhaul at the same time. What else should I overhaul or replace? Is there a good local source for exhaust parts? Thank you for any advise. Looking forward to your inputs.