For grips like UTx, it is important that you use enough solvent to ensure a smooth fit. Also, slide the grip on slower than usual and adjust the grip as it went down the shaft to stop it twisting. This is easier than just pushing the grip all the way on and then fiddling to adjust the grip to make it straight.
For thermo-plastic grips, like i-LINE, it is critical that you allow 1-2 days drying time after the grips are installed. If you do have questions about installation, call a Lamkin Grips team member at 1-800-642-7755.