Yamaha DTXpress/DTXplorer/DTXtreme

Greetings to the group,

I am a newbie both to the DTX2.0 AND to playing drums.  Picked up my 
first set of sticks about 3 months ago (I am 39 years old) and took 
lessons from our drummer at church (which is where we have a DTX2.0 
although our kit itself appears to be a bit older than the one 
pictured on the front page of this group).  Since then I have 
purchased a CB5 set for home, and now that our drummer has left the 
church I have inherited full-time duties on our set.

Since playing it, I have noticed that there seems to be quite a bit 
of difference in the volumes between pads (snare, hi-hat & bass all 
sound ok when they produce sound, but the toms seem very low while 
the one cymbal is very loud and the other seems a little soft).  The 
church could not locate the manual and thanks to the group, I was 
able to download one which I believe was 30+ pages, but then I saw 
another one which was I believe much bigger.  So, I think something 
needs to be done to 'tune' the set as they have had it for almost 7 
years & I don't think it has had any work done on it.

So, my question to you is:

Where should I start?

Thanks and Happy Holidays!
Joe