Should I attach my resume to networking emails + networking questions

A lot of my friends who are also recruiting IB have been telling me their response rate has gotten much better ever since they started attaching their resume to the initial networking email. I have some good experience on my resume as I had an internship with a start-up in high school, a wealth advisory internship after my freshman year, senior leadership positions in a couple finance/investing clubs on campus, and I'm currently planning to work at a boutique investment bank in my hometown this summer, although this is still tentative because of Covid. The bankers who respond to my emails sometimes ask for me to send my resume anyways and almost every time something on my resume becomes a big talking point in the call. However, the reason I haven't been attaching my resume is because I'm a finance and math dual degree and my GPA is a 3.4. Should I still be attaching it despite my low GPA?

On another somewhat related note, the one course grade that is really tanking my gpa is currently going through the formal university process of potentially being expunged from my transcript. I have reason to be confident that the outcome will be in my favor and if this is the case, my gpa will go up to a 3.6. Because of this, a few of my friends recruiting IB suggested that I should put 3.6 down on my resume when I email bankers in order to boost my response rate. They say that even if the outcome of the review is not in my favor, the bankers wouldn't remember what GPA was on the resume that I attached to my email; so as long as I put my current GPA when I apply then I'd be fine. To me this just sounded risky and overall just not the right thing to do but I wanted to just double check with a larger survey of people and that is why I have come here.

Also, any general tips on what to do/how to work with having a low GPA during recruitment will be greatly appreciated.