Brinkman Pitmaster Deluxe Smoker Mods

I am new to the forum and have not had any luck finding any info on Brinkman Pitmaster Deluxe mods. I am thinking of buying a used Pitmaster but want to make sure I can mod it before I do.

I saw one thread about raising the fire grate and adding a baffle. Any details on these mods and any others would be great.