Granite is NOT co-dominant in burmese. Assuming it is also not co-dom in retics, if you were to breed a tiger retic to a granite burm, 50% of the offspring would be Tiger Bateaters het granite. If you were to breed two of these Tiger Bateaters back to each other this should be the morph distribution (someone double check my math):

3/16 Bateater (66% het Granite)
1/16 Granite Bateater
6/16 Tiger Bateaters (66% het Granite)
2/16 Granite Tiger Bateaters
3/16 Super Tiger Bateaters (66% het Granite)
1/16 Super Tiger Granite Bateaters

Brad Johnston
Python Eugenics
pythoneugenics@comcast.net
781-330-2854