I made mine out of 1/4 plate and blew a hole in it... and drilled 5 holes in it to bolt down in place where the comb plate Allen bolts go.. but instead I used hex head bolt with a jam nut to lock it down so it don't tighted to deep or it would hit the steps as it came through the turn... if u all have any questions on the escalators I have a lot of knowledge.. I put in 26 units at the music city center Nashville ten and adjusted them all thanks. I will get u a pic of the plate so u can get a better understanding...