You can go with a taller front sight "if" you cant find and correct the problem any other way but I would do that as last resort.
There is only one person that I know of that sells a tall Garand front sight, Roland Beaver
There is another way you can gian alittle on your year aperture if you don't have stock interference
You can file/grind a angle on the bottom of aperture which will let it adjust alittle lower gaining you some but in your case may not be enough