S-P 3 upgrade
I have had an AR SP-3 for almost 40 years and continue to enjoy it. Am considering the official upgrade which is only done by AR. A less extensive service by the only AR certified tech in my area costs nearly as much,o I am not interested in that option. Is there anyone out there who has had the SP-3 upgrade done, and what is your opinion about the outcome? Grateful for any thoughts!