If your 48t chainring will be pinned/ramped you can probably get away with raising it. Once the chain engages with the ramps it will shift. Gets a little tricky with a basic non-ramped chainring without the shift assist points as a good shifting technique is needed.
There might be some issue with downshifting depending on the profile of where the outer cage meets the chain. But this might be overcome with some tweaks.
John