hi mate...will check yer track in aminute..

some info before, though:

i reckon you would want to shorten the decay (possibly release, dunno) just shorten the kick... depends on the length of the initial kick, though.. but as you said it's ''fat'' i reckon it's a longer booming one - so cut it so it's only a 16th note (or 32th) note long, depending on what you want roll wise. thing is you don't want them to overlap each other...if you use fruity loops there is a very easy way to do rolls. give me a shout if you do, mate :)