There have been some problems with the billet plate. Don't know the country of origin but the problems are QA/QC related. There have been cracks found in the oil pump bolt holes and some bypass plungers look like they were machined with a bench grinder. If you have a jewelers loop or any 10X magnifier, suggest checking the bolt holes for cracks and removing the bypass plunger and polishing if necessary; maybe you got a good one. Suggest that you also polish the inner chain on a buffing wheel; the old Morse chain will wear on that inner tensioner much faster than the new roller chain.
If I had seen the post in time, I would have suggested that your buddy go to the Andrews website where the list the parts, including the later stock cam plate which is good enough and made in the USA. This would have required the conversion cams though, the stock cams would not work. A set o 26N cams would have been a nice upgrade. The SE204 has a wicked advance curve with the 8* ground in advance and can be a ping monster in the summer heat with some bad gas, or ethanol, particularly on the later models with the higher gearing. If he has a ping problem, just get the -4* retard sprocket and the problem should be solved. The SE203 would be a better choice with an FL model.