OP (Boatdoc), you mentioned that this is a "compact." By compact do you mean Officer/Defender-sized (in Colt model terms of size)? If that is the case, then these compact models often do not have barrel bushings like Government/Commander sized 1911 models, and tend to have more complex or nonstandard recoil spring-and-guide assemblies.
If my understanding of you meaning by "compact" is correct, I am wondering if the binding has anything to do with the functioning of the barrel bushing and/or recoil spring-and-guide parts or interface with frame/slide?
Also, curious to hear your answer to KHFrench's question whether this is a series 80 (or series 70) model?
In any event, looking forward to hearing your report on the outcome of the manufacturer's diagnosis.
If my understanding of you meaning by "compact" is correct, I am wondering if the binding has anything to do with the functioning of the barrel bushing and/or recoil spring-and-guide parts or interface with frame/slide?
Also, curious to hear your answer to KHFrench's question whether this is a series 80 (or series 70) model?
In any event, looking forward to hearing your report on the outcome of the manufacturer's diagnosis.