Hi, I use ibd also. I saw you mention you use bonder before base coat, which bonder do you use? Is it the powerbond?
I can't see from here if your problem is lifting or chipping, if it's lifting then perhaps you're not being quite thorough enough with cuticle removal, there shouldn't be any cuticle on the nail plate or the product can't adhere to the nail plate properly,.
If it's chipping and you are capping the free edge then I've seen that some people use the powerbond along the free edge to help, personally I don't get on with the powerbond I find it welds gel to my clients nails making removal very difficult!
Also what are the natural nails condition? If they're weak, bending, peeling then maybe they're just not suitable for gel polish and a hard gel overlay would be more suitable x