Hello all, very new to 3d printing and looking for some help/advice. Warning this may end up being a long post.

Wanted a 3d printer for years and due to everything going on, i have some time on my hands.

I bought this: https://www.ebay.co.uk/itm/3D-Printe...72.m2749.l2649

It was nice and cheap and was also a project for me.

I have sucessfully built it, including ordering parts like bolts and threaded rod which they forgot to include. Learned a lot about it thorugh tinkering, and did my first print a couple days ago, it turned out much better than expected. here is pics: https://i.imgur.com/zplnSK8.png https://i.imgur.com/F2WEESe.png https://i.imgur.com/UjjO4Ar.png

Im fairly chuffed with how it turned out, couple things need sorted like there seems to be a bit of wobble on the veritcal cab part, but have a feeling new bearings would fix this as there is a bit of wobble in the extruder carriage.

I also had an issue with the heatbed not working, have since fixed this. Learned it needs to be set before everyprint.

This was sold as a beginner printer, i do not think this is a beginner printer at all.

My main issue and why i am posting here for help is an issue with centering. I have used all the google fu i have on this.

Basically when i go to print a file (using CURA) with custom profile i set for my printer. it shows the object in the centre.

But when i print, its printing in the back left corner of the heatbed.

I have been through every menu on the printer, multiple times.

I found a "set origin" option and manually moved the extruder to centre and tried it and nothing happened. I tried starting a print with the extruder here aswell, but they return to "home" before starting. home seems to be, platter all the way back, vertical all the way down, and extruder all the way to the left.

After some googling last night someone advised me to change the firmware to Sailfish? I believe its currently on marlin. I have the skills to do this, im worried however that if i change the firmware, it will loose settings/parameters that are needed to print and i will not know what to put in to get it working again.

Any help or advice on this is greatly appreciated. Because i am now lost.

Here is a bonus octopus i printed last night. : https://i.imgur.com/aJrWcNc.png

(Im also using the cheap filament that came with the printer as im waiting on a kg spool to arrive, which may also help with print quality a bit)