As I am a rookie, gulp, I really have no grinder. I have been shopping and am leaning toward the Rocky but pretty expensive. Although I got the Silvia for $30 hopefully the wife wont mind too much! I DO have a blade grinder that I have found to be basically useless. Thanks...I will check out the other threads.
I paid $350 for mine and felt I got an excellent deal, but $30! If it works, you did phenomenal.
I am half tempted to just find a local servicer to give her a tune up but that sounds expensive.
Until you get a grinder and can really test the machine, I think it is pointless to take to take the machine to a repair shop. Save that money for a grinder. I started out with the Le'lit PL53, and found it to be more than capable. It is cheaper than the Rocky and often gets better reviews. It's definitely worth checking out.
After you get a grinder and start producing some decent shots, look into getting a PID. PIDing the machine will greatly improve your shots, plus it saves a lot of time from not having temperature surfing.