Kalamazoo Startrite 20RWH Band saw

[M4wdFab]

looking to source replacement carbide? saw guides.  the lower one is jamming / galled and popping the blade off.  all i have for spares are broken or incorrect size.  cant located anything on the internet (although i thought i had a few years ago, bawked at price, and changed blade size to a pair i had)

Found manual for the saw!

i have the 20RWH model

https://sharkbandsawblades.co.uk/downloads/metalworking_vertical_bandsaws_handbooks/RWS%20RWH%20Early%20Models%20Handbook%201E%20WM.pdf 

not seeing why i cant change the lower guide to a universal 20$ 3 bearing type as an option also.