Fuel sending unit

I need some help with my fuel sending unit. More like options. I have a autometer fuel guage that's non liner but my sending is linear so the guage does not read correctly. Now I have tried the metermatch didnt correct the issue. Got a second meter match still didnt fix the issue. What other options do I have. Theres an other unit like metermatch I'm thinking of trying but ifnitndont work I'm still where I am now. Is there a guage-sending unit combination I could buy, is there a sending unit I can get that's non linear at the same to match the guage I currently have?