Modern Buddy

So I got my 3.5x10 Zippy 1 on the back of my Buddy 50, to replace the crappy stock tire (I will be posting pictures soon). The only "mod" I had to do, in order for the tire to fit, was remove the fender. I am very pleased with the traction of the Zippy so far!
Now for my question: What tire pressure should I use in the front (90/90/10) and back (3.5x10)? Most important to me is increasing stability, control, & traction, especially while cornering.
Also, I've been told by my local shop that tire pressure lower that 30psi can cause the 10" rim to be bent if I hit a bump, but it seems like a lot of guys on the 125's adjust their tire pressure closer to 20psi. What are your thoughts?

20 psi is way too low. Running too low of a tire pressure will seriously compromise the handling and response of a bike. Most people run between 28-30 psi. Look on your scooter for a sticker that specifies tire pressures to run. If that fails, look in your owners manual. My Blur specifies 30 psi, front and rear.

Unless you are really a lightweight.. both my daughter & wife run 25-26 front and 27-28 rear. We would agree 20 is just too low.

I run 30 rear 25 front

Okay... I looked at the sticker on my Buddy 50 and it says 30 in front and rear. So, I'll just go with that for now. But I was wondering, what's the reasoning for running a slightly lower pressure in the front?