Rules Questions or not answered

[plloyd1010]

Pz Gren states that the max modified morale a unit or leader can have is 10.
Modern PG is silent on the topic. Does state 12 on 2 D 6 is auto Demoralization.

PG Modern appeared betwixt the 3rd & 4th PG editions. Since the 4th Ed is supposed to be backward compatible, I would expect that the max 10 modified morale would be applicable. The 3rd Ed is equally silent about max morale, thus it is a 4th Ed change.

Can planes miss their target as is in 4th (3rd) PG on 1 or 2 on a D 6?

Since it was included in the 3rd & 4th editions of PG, I expect the rule's absence from Modern is intentional. No missing or not arrive.

Planes do not suffer the effects of logistical short fall.

That would be my call. I don't see why aircraft would be part of battlefield logistics. (Handcart didn't show up at the airfield?)