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should work, high pressure injection is the best and have lifetime warranty.- o- p6 s, ?, g7 f& Q$ w( \# p+ v
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hairline cracks not going all the way through wall is not unusual, U9 t. z( u* I: f
, u8 e1 k4 t, Z4 [8 @; nbig crack is rare, if possible, I rather back off