Personally, I think it's probably easier to fit a TSRF guide than to try to make a standard guide deeper. The TSRF unit also gives you the ability to fit commercial braid, and, as I did on my F1 proxy car, allows for soldering lead wires direct to the braid tabs (where it will fit). And you can easily shape the guide to whatever profile suits you. I'd rather cut out a bit of chassis than try to make a standard blade something that it wasn't to begin with. But that's just me.