hey wodie
i carnt remember saying anything about gaining 21 pounds in a couple of months,
i did gain well at the beggining mate,probably did gain that much
number 1 is the diet
number 2 is the training
get the diet right which makes the training easy,therefore making gaining muscle easy,
when i first started i did over train but i grew aswell,
try to go for 2 grams of protein per [pound of bodyweight
and train each bodypart weekly
you will gain better like this
steve