Just a heads up, in europe atleast, many are using reinforcements on the front bulkhead to prevent it from snaping. Myself have broken a couple but now its in the past, never broken again ever since i got an aluminium brace that captures all 6 screws from the front of the bulkhead.
These are rare to find, got mine here:
http://www.warny.pt/store/xray-xb4-bulkhead-warny i think they will ship to USA also.
PREVENTING THIS:
WITH THIS: