Actually, the first 3,000 miles is probably the most labor intensive. You need to take it frustratingly slow, and change the oil more often, go around and check for loose nuts, suffer anxiety about "am I doing the right thing at the right time", and that's when (mostly) any defective parts will show themselves (for me it was the sprag, a pot metal throttle perch broke when I over-tightened it, and the muffler stay broke that I just had re-welded). OTOH, my new BMW was in the shop with warranty work more than the Enfield had problems. Go figure. Machines just go through a "shake-down" period at first. After that, the bike REALLY smooths out, you can go at normal speeds, you feel more comfortable with maintenance issues, and things have settled into a relative routine.
Right now I'm waiting for a tool to come in from England to get a part off that shouldn't be so hard. CMW should have it in stock, but they just don't. Things like this are frustrating, but... shiite happens. What can I say? It's a PITA, but following the step-by-step instructions makes it easier- rather than looking at the whole job and throwing up my hands in frustration and anxuety.
Royal Enfield is aware of it's reputation. The T-shirt dsys, "Makes a mechanic out of an ordinary man". The new and improved comany makes a great effort to improve on that, but they are also proud of the tradition. Actually- so am I.
For sure, ebay and CL is full of frustrated semi-owners. I have 40 years of riding under my belt, and out of the 3 bikes I currently own, I'm somewhat surprised that I like my Musketball the best.
It sure isn't for everyone, though. There's only one way to find out...