everyone who has done more than 1" of body lift has had to do something about the 4-high position. some removed the little panel underneath and trimmed it, some just used a dremel tool to make a little dent in the floor hump for it to shift into as well as cutting the center console panel a little. i just never use 4-high anymore. it is a consequence of doing a body lift because of how far back the shifter moves for the t-case when you shift it into 4-high. as for the lean, if you tightened all the nuts properly and all 8 body lift blocks are in, i can't tell you what it might be. hope you dismounted the power steering reservoir and loosened your airbox hoses prior to install. possible maybe something is too tight? just check everything again, because if it leans at all, it should lean to the passenger side due to the weight of the t-case, battery, gas tank, front diff, intake, etc. all on the passenger side.