Bad design for sure!
Mine did exactly what your talking about. I talked to some people here on RCU and they said that the Cline regulator is the fix.
I have installed it and ran the motor at home. It started really easy.
I am going to be flying it tomorrow for the first time with the regulator on it. I'll report back what I find.
A buddy of mine just got a UCD / Saito 1.00 and just installed the Cline right off the bat. We will be flying his for the first time tomorrow as well.
Cline regulator
Go to the link for the PCFS