[Amps] Core wrapping?

[TMorton]

Am in the process of building up a 8877 amp and now working on the Tank 
Circuit coils....I am pretty much following the ARRL Handbook 2006 for 
L4 and L3 (160,80m). to handle the high power, I am using 3x T300-2 
cores with #10 Teflon silver wire and 3x T225-2 cores w/teflon, etc. My 
question is when 'stacking' the cores do I stack the 3 cores then wrap 
the fiberglass tape around them OR do I individually wrap each of the 3 
cores with the glass tape then do an additional wrap over the 3 of them 
together?
Tnx
73
Tom
CX7TT