It is fun.. Well for me and many others !!
Attack the ramp with Nifti first. This will lift most of the crap off. Novus 1 ONLY will mix the crap around like a paste, and it will be hard to take off. Warm to hot water in a bucket with a couple of caps of nifti.. Put the nifti in first, so when you pour the water in, it creates a foam. Drop the ramp in the water and let it soak for an hour.. If it has decals - be very careful, you should not soak.. just attack with warm/Hot water and nifti..