Ok, this is a question that Wendler actually answers in his terrific Q&A on the subject of 5/3/1, but as we say in scandinavia, "there are degrees even in hell". To make a short story long: i used to do squats to slightly above parallel because i was a whiny little man-whore who thought i was taking care of my knees and because my idiot classmate who hasn't gotten stronger in four years of lifting five times a week told me it was the best thing to do. Half squats, you could say. But then the power of the S&P enlightened me, i hardened the fuck up and started doing my squatz ass to the grass. That meant a reduction of my 1RM of course, and i started doing 5/3/1 at the same time. NOW. When i started 5/3/1 i could do 5 * 85 kgs. So i set my max to 90 kg and then removed 10% for a grand total of 81 kg. But Wendler has me training my hamstrings, which i never did before (see man-whore paragraph above) which has made my legs commensurately stronger in these three weeks. Also, i saw a Rippetoe tutorial on the squat which immediately added 10 kgs to my 1RM. Now i squat 115 kgs, and i know that i can do 120 if i don't insist on maxing last in every workout. In the case of 120, that's a 40 kg deficit. That's 90 lbs. The question: should i REALLY not increase my max to what it actually is? tl:dr; my Wendler max for squats is 90 lbs lower than my actual max. Is this too much? Should i adjust it even though Wendler says not to?