So Does Anyone Think Stress Fractures Are Risk?

So I have this bad boy and I recently broke a roor standard 18.8 bowl that a friend gave me for it so i was going to buy this one for it,but one of my friends pointed out that this may weigh alot on the built in stem so what im asking everyone is; do you think I should be worried about stress fractures around the base of the stem for my layback if i leave the precooler on for long amounts of time or if I take it off when not smoking with it I'll have nothing to worry about?
 
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