Help Me I'm Drowning In My Own Self Pity!

Hi everyone. I'm strugglin like mad trying to find the right settings for my amp and peddals. I have a Marshall AVT150H and JCM 1960 Cab which was set up right... but I've changed a few things to my levels, plus I have now got a few new effects that I'm not to use to: Boss Metalzone, DD6 Delay, plus crybaby wah wah. I prefer the heavier metal/Death kind of sound - plus raw scratchin lead etc. I'm going to throw it all out and abandon playing the guitar after 25 years..... so pleaseeeeee help.
Seriously tho' I'm finding it difficult to find a copy of the suggested settings for tone etc. from marshall they did have a pdf that I used a while ago to set things up in the first place, but I've lost it somewhere, and they dont seem to have it on their website anymore. Any ideas would be much appreciated.
Ta.