xander,
The 335 problems are mostly solved. A couple minor ones remain- the brake can quit working right after a while, it need to be dismantled and cleaned once or twice a year to keep it going- the spark plug covers are delicate, but can be taped on- starting still takes a few tugs when cold, and sometimes needs a bit of choke after being off for more than a couple minutes.
My latest one has been modified and works great every day, and is loaded with power. Did you read Greg's post re the Cali Special? It sounds very reliable, and peppy.
Just got another one today, new, on ebay for $280!! Dang, it is for a friend, a great price I got for him...