FWIW, a friend of mine that's been brewing about 20 years told me to add the pumpkin to the mash last after mashing in the grains. Seemed to work well for me. Make sure to grab a pound of rice hulls too.
EAC - 5/2/14
Growing Hops in Key West, FL....
: Apple Pie Cider
: Imperial Ginger Cream Ale
: Chocolate Witibier
: Mango Cream Ale, Muddy Waters Stout, Muddy Waters Bourbon Chocolate Stout, Wheat APA,
: Black Caesar RIS
: The HBT Sweaty Fat Guys Cigar club