I have a block guard in my fully built ls it about half an inch or less but not sitting all the way at the top. My question is do i leave it in or take it out because some people say that it keeps heat at the top of the cylinder and causes them to crack after a while but my block guard is not at the top and im going to travel alot would be alright. Oh and if I should take it out i how do you do it because i tried and its very hard i could not get it and what do i use to get it out? Oh the setup is going to be ls Vtec