Yes Ribteks have 125, 160, 190...I have 160s and 190s. They are only sold out of Australia for most instances though some of us have bought them and shared with members here and other locations.
I would contact Kelly Peterson (Arrows by Kelly fame) as he has some he bought and helping members out...just PM if you are interested and he will tell you if he has enough to sell a few to help you out. I have some as well...not a lot but can spare some but if Kelly cant help you then send me an email or PM and I will see what I have extra. I have already obligated some 160s to a gentleman in Columbia SC.....but have a few 190s if you only need 6 of them.
You also have the Grizzly Kodia (200gr) heads but after you sharpen them a few times I bet they are closer to 190grains anyhow...just another option.