Smart blinds not closing fully

Hey everyone, I'm hoping someone here can help me troubleshoot an issue that's been driving me crazy for the past couple of weeks. I have a set of Lutron Palladiom shades installed in my living room - specifically four units covering a large window wall facing west. They've been working perfectly for about 18 months, but recently I've noticed that two of them (the middle two) aren't closing fully anymore. When I send a close command - whether through the Lutron app, my Control4 system, or even the physical keypad - the shades will lower about 95% of the way and then stop. There's a visible gap at the bottom of maybe 2-3 inches. It's not huge, but it's definitely noticeable, especially in the evening when we're trying to block out the sunset glare while watching TV. Here's what I've tried so far: 1. I've recalibrated the shades through the Lutron app following their official procedure. The calibration process seems to complete successfully, but the problem persists. 2. I checked the physical tracks and hembar for any obstructions or debris - everything looks clean. 3. I tried running the shades up and down manually about 20 times thinking maybe something was binding, but no luck. 4. I've verified that the fabric isn't bunching up anywhere on the roll. 5. Reset the processor and re-paired the shades. The weird thing is that the outer two shades on the same window wall close perfectly every single time. All four shades are identical models, installed at the same time, and connected to the same processor. The two problematic shades are right next to each other in the center. I'm wondering if this could be a motor issue, a limit setting problem, or something else entirely. The shades don't make any unusual sounds when operating - no clicking, grinding, or straining. They just stop short of the bottom position as if they think they've reached their limit. One thing I should mention - we did have a power outage about three weeks ago that lasted several hours. I'm not sure if that could have corrupted something in the shade memory or settings. The timing seems to line up roughly with when I first noticed the issue. I really don't want to call out my integrator for what might be a simple fix, especially since their service call fees are pretty steep. Has anyone experienced something similar? Is there a way to manually adjust the lower limits on Palladiom shades, or is this something that requires the dealer programming software? Any advice would be greatly appreciated. These shades were a significant investment and I'd hate to think the motors are already failing after less than two years.