The last thing you want is for your IEM's to go in deeper. The ear has two very distinct sections. Outer and inner. The inner part of our ears are only covered by a VERY thin layer of skin. Having something pushing on that all day would start to cause, probably a pretty decent amount of discomfort.
You can use different tips or extenders (purchased seperatly) if you feel they are not fitting right. Just don't cram them in your ears. It will start to hurt.
I JUTS got the XD05 BAL 02 and I love it.
Nice setup. Enjoy!