There are some options for suspension upgrades, though an E-Z Flex or other equalizer upgrade isn't available with the axle spacing or similar equalizer measurements. So the best option I can offer for an improved ride are shock absorbers:
- Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 5,200-lb to 7,000-lb Axle # RM-2460
The # RM-2460 will give you a much improved ride, even more than the E-Z Flex. because it greatly reduces the overall movement of your trailer's... view full answer...
For the slide out that measures 154-1/2 inch from flange to flange the slide topper you need is the part # LCV000168109 and then for the slide outs that measure 180 inch from flange to flange you'd want the # LCV000251478 and you'd be set. These come with all of the hardware needed to install as well. view full answer...
The Furrion Chill HE units are the best options. They are the quietest and blow the coldest air from what we have found. And since you have a Dometic unit currently all you would need is the part # FR42PV which comes with an adapter solution that allows you to easily install it in place of a Dometic unit so it's best option. view full answer...
Since your doorway width and threshold height is both 29 inches the Lippert SolidSteps you'd need would be the part # LC791573 which matches that perfectly. If the bubble on your level is with the two lines like you mentioned then your trailer would be level enough. view full answer...
With the recent addition of the MORryde AllTrek 4000 Equalizers # MR29DR I feel these are now the best option. These equalizers provide up to 4" of travel with axles up to 8,000lbs. Be sure to pair this with one of the shackle kits listed below. You will need to identify if you have Correct Track suspension(adjustable axle hangers) and what the length of your straps are from center to center on bolt holes.
MORryde Suspension Upgrade Kit for Tandem Axle Trailers - 2-1/4" Long Shackle Straps... view full answer...