Ronoldson ?
I would think very hard before using Ronaldson, I asked for Lycoming cylinders to be fitted to my engine, when the ECI cylinder AD appeared we checked the cylinders to find he had fitted ECI cylinders not the Lycoming ones as asked unfortunately he had bust the company that did the work on my engine and set up another in the same workshop.
This has cost me the 20% extension on the engine because the ECI cylinders have a 2000 hour hard life.
At least I did not get stung by him as much as a local flying club who had a number of engines rebuilt by him with the same cylinder issues.
Subsequent to this the company has been taken over by Gamma who are a reputable company and would not knowingly rip any one off but as long as the Ronaldson name is above the door I won't touch the place.
I'm sure Smarthawk would have some interesting comments on this issue.