digital (and screen) printing on bottles

Hi Folks,
I have a customer who has me print directly onto plastic bottles (very rigid and take screen print ink well) but now has a short run 4cp design that I need done. My regular guy has a rotary screen print 1 color machine. I need to find someone I can send bottles back and forth to for full color jobs.
The bottle is 4" diameter and like I said nice and rigid. I had access to a desktop uv ink-jet with a rotary feeder (turner thing) to spin at same rate as the head moves past it but that machine broke down and I havent found a replacement vendor for them.
Im in Southeast Mass.... Any vendors anyone can recommend?
ps the bottles have no handle or obstruction