My Bulky Eight is made by Toyota. Purchased it new in the '80s and have the manual from Toyota. Works pretty well, but sponge bar is impossible to find replacement. The sponge bar is so narrow (only about 1/8" wide) that couldn't install sponge strip. I used piano tuning felt strip instead, and it does require more frequent cleaning, but is working fine, and holding up quite well.
If anyone knows where to find correct sponge bar replacements, let me know! Thanks all.