Freight not show as shipping option

[matrixmedical]

I have a listing that had freight as the shipping option as it is 150+ pounds. Have 4 total, sold 1 without issue. Had another person try to buy but it would not let him for some reason. I was able to fix the issue by calculating his freight shipping and my plan was to put a flat rate of $275 and was going to change it back to calculated vs. flat after he made the purchase. After he made the purchase, I went to revise the item back to freight with calculated vs. flat rate, but there was no option for freight now? When I selected Fedex ground, it tells me that the item is too heavy and to choose freight. In summary, eBay is telling me to select freight as the shipping option but that option is not showing now?

[pjcdn2005]

I didn't think that you could use calculated when using freight. How would it calculate when it doesn't know which freight service you are using?  In the same area where you specify whether you want a flat rate or calculated, there is a 'freight over 150 lbs' option. Is that what you are trying to use?