https://www.pitbullguitars.com/shop/...ss-guitar-kit/
They are listed as back in stock on the website. I would recommend getting a new one....and asking them to check the size of the holes and the bushings before they ship it to you.
The electrical tape is never going to work....too much force from the big bass strings...will pull it back out of the body.
The large diameter ones do sound like a good option. Check their measurements and ask around as to how much you need to get a nice fit. From my measurements.....right up high on the taper on the business....against the hole....about 1.5 to 2 mm difference will work well. Do the black coloured pins screw into the bigger bushings....and are the new bushings black too....you can see them. Maybe a quick spray with some good auto rattle can matt finish.
You need the bushings to have the vertical ridges to grip the holes....turning them down will not produce that...and make it really hard to get them to grip.
I do not like three point bridges at all, but they are what fits and comes with the kit. You will have a compromise on string height to avoid buzzing on the frets. With the radius of the fingerboard making the E and G strings sit high over the fretboard so that A and D strings can clear the frets in the middle of the fingerboard.
I wish you luck with this...and hope you get an outcome that gives you a kit that you CAN play for years.