I didn't mean to necessarily stop doing lifts off the blocks. I just meant that I wouldn't worry so much about the ratio thing. I suspect things like back to front squat ratio etc are fairly dependent on the training regime. I think of them more as descriptions of certain lifters than prescriptions of something one should aspire to.
I'm a huge fan of finding the weakness (for snatch, clean, jerk) and only really doing accessory work that is designed to bring up the weakness. So... Why can't you clean more? What feels like it is limiting your cleans? You said they felt heavy from the floor. Does that mean you are being pulled out of position before you get to second pull or... What does it mean? I think sometimes people get carried away worrying about accessory movements that aren't addressing their weakness.
But take that with however many grains of salt you need. I don't claim to be any good at this.