I have no problems with MCC 004 on my BenQ 1620.
Burn speed: 12x
Media: MCC 004
My Source: 25pack 16x Verbatim on sale for $9.99 at bestbuy. Bought it on Monday.
In fact, I think that's the lowest PIE I've ever gotten with any media period.
AWILLIAMS64: Try burning at 12x and post the results for us to analyze.
Don't forget to set scanning to 8x, since it's standard here.