Tuning AFR trouble

hey guys, just a quick question about tuning to your AFR both MAF and VE

it seams no matter how much I try my idle and low throttle never get corrected. Most of the graph I can get close to +/-5 but my idle is always off. My Fuel Trims get me close but than my AFR jumps around. I am running a big cam and switched to a bigger MAF. My curves are good and my WOT is almost perfect for my commanded AFR

my question is would the size of my camshaft throw off my readings at idle and low throttle on both MAF and VE tuning?

Anything I can do to dial in better?

Im tuning a LS2 with HP Tuners

With a decent sized cam I prefer to tune in SD. The reversion you tend to see at idle from a large cam can mess with the MAF reading making it hard to tune the idle and get consistent results. I'd perform a speed density patch and tune in SD only and your problems are almost certainly going to disappear.