2005 Gravely ZT 2148 control and deck issues

Hi every one. I am working on a 2005 Gravely ZT 2148 mower. I am experiencing an issue with the LH control arm. When starting the unit with the hand brake on, as required, the unit immediately wants to pull to the left. If I release the brake it stops. I have noticed that the LH control arm is about 3"-4" ahead of the RH control when both are in the "Neutral" position. I believe the problem is with the "neutral" adjustment of the LH control arm. Is this a simple adjustment or do I have to practically dis-assemble the LH side of the machine to get at the adjustment area/components? Unit is relatively low hrs, just 194 and it's a 2005 residential use only. The mower deck was beat up pretty bad, I just spent the better part of three days repairing cracks and split areas on the discharge side and at the two outer blade spindle mounts. The previous owner was NOT a welder by any stretch of the imagination. His repairs/welds came off with an air chisel in about 2 minutes of work. I have attached the "Before" pictures.

AVB, thanks. The link worked great. I did see a couple of different models that look like this unit. I'll check it all out and let you know how I make out.