reducing gain in a modded metal zone

[bobster]

hi guys-
im looking for ideas suggestions to reduce the gain a tad in my modded metal zone.
its pretty good just now with the two diodes as normal with a 100pf cap over one of them. also, a lot of other caps changed out for film caps and 1uf caps changed to tantalum.
i use a strat into an old  pro reverb and am looking for a fat but smooth sound with a bit less gain and harshness and some more clarity...........
i am aiming for a good fat sound for slide to make the guitar sound a bit like a gibson and at the moment , it is just a bit too heavy and even with the level and gain pots down low , it is still a bit wild !
any suggestions and advice most welcome- maybe a resistor change somewhere would help?
[i can solder and understand basics but im no tech]
thanks a bunch - rob

[MadSkillzMan]

R41 handles some distortion, if you increase the resistance, it will reduce the distortion

[dirk]

Here's the schematic:
http://web.tiscali.it/boxsmt2clone2005home/_web_doc_01/_web_img/mt2_06.jpg

To reduce the gain, you have to increase R51. 22k will turn the mt2 into tubescreamer like overdrive, this maybe to much so experiment. R41 determines together with C30 the highpass cutoff of the clipping stage. More info about that here: http://www.geofex.com/Article_Folders/TStech/tsxtech.htm Making C30 less will reduce the amount of lowfrequency distortion.
To make it smooth remove C34, C24 and C20. This will eliminate the gyrators that will eq the pre and post distortion, these are the main reason for the specific metalzone sound. Than you could add asymmetric clipping by changing diodes 3&4. Lots of options here, but 2 germanium's in series with 1 germanium will give the smoothest sound.
Doing these mods will change the mt2 into a smooth overdive/distortion.