Our buick estate had the same lazy window. Found this 2 in 1 oil at walmart that has a long straw attached and i was able to get in every area. No more problems, window goes up full speed ahead.
Here I is I like quick snippet updates. Luke is learning from his dad. I saw a video from a guy in Canada where he used Kleen slip silicone greaseless lubricant and it helped the windows go up faster. There's also 303 products that help clean and lubricate rubber. I don't think Kleen Slip is available in the US but 3n1 makes stuff for RV windows. Great video Good to see you working with your boys. Happy Motoring.
3 in 1 www.amazon.com/3-ONE-Care-Rubber-Conditioner/dp/B071QZ6RKD/ref=sr_1_39?hvadid=78615133819311&hvbmt=bb&hvdev=c&hvqmt=b&keywords=silicone+lubricant&qid=1581345363&sr=8-39