You can use a pen spring and simulate one.
here is the part number and any roland dealer or the roland web site should have it
8 1000006524 SPRING,CAP FRONT VS-640
I was about panicing.
PM. me your address I want to send you something.
I am good.
I will PM you my address, everyone will have it - and I will be swamped with personal requests.
I was near your area 2 weeks in a row doing installs and repairs. If after this current lock down and I happen to be near you, I will stop in to receive what you have - figure in 18 months - LOL!
When that machine first came out, there was no spring.
In the future - I put a piece of tape on one end - just in case it wants to fly away.
If you use a pen spring - just clip it and you will have a few. - the object is to put a little tension on the top to square it up with the head.
my bad, i thought you could private message on this board. You do so much for so many people I just wanted to make you something, maybe with the laser, Not sure yet.. :-)
If you are ever in Harrisburg stop on by.
LOL, the last time I was it was at 70MPH. PM sent