if there was pressure in there then sumthings wrong ....change the bolt they r cheap...when you rev it it might be building even more pressure inside, but just everso slightly at idle. the sc oil is seeping past the worn rotor/gear seals and just getting all over the rotors and sitting in the lim..when you rev it it creates a pretty powerful vacume sucking whats laying in the lim down through and burning it..it wont do it back to back (revs) because its just seeping and there isnt enough laying in the lim to get sucked down into the combustion chamber to be burnt, well maybe just not enough to be seen in the form of smoke..thats just what mine was doing ,or should i say thats my theory on what was happening...
