Also, (didn't see anyone else mention this...) unless they're hatchlings (which it doesn't seem like they would be) feeding is not crucial this very minute.
BP's are soo sensitive to stress, and often won't eat for many different reasons. Many of them completely normal! (time of year, breeding season, doesn't feel like it..lol!) Since you just got these guys, I'm sure it's been very hard on them being brought into a very unfamiliar (and less than ideal) environment. Having your friend force feed them is only going to increase their stress levels, and make them much less likely to eat on their own. Force feeding is a last resort- We're talking, going on a year, tried everything in the book already, last resort. Unless they're very very young, 5 grams is nothing to worry about.
Also, you say you have 2, are they in the same 10 gallon enclosure?