Thank you HopeS,
I have checked to see that the property is set identically to the others, which I believe it to be. Reasons number 1, 3 and 4 do not apply to my situation. I think the most likely cause is reason #2 regarding the 20% limit relative to taxable income after subtracting out capital gains. I will calculate and check. I'm also aware of the $170k income limitation which I do not exceed.
Thanks for your assistance.
