adhesion - FDM printer first layer infill swell upward - 3D

My Kossel Mini printer was working well. Recently I made some changes including replacing the nozzle and throat, adding a silicone heater cover. Now it has the problem of first layer adhesion. The

Terrible first layer - 3D Printing / 3D Printers - Talk Manufacturing

Three-Dimensional Printing of a LiFePO4/Graphite Battery Cell via Fused Deposition Modeling

5 Simple Steps to a Perfect First Layer

adhesion - FDM printer first layer infill swell upward - 3D Printing Stack Exchange

Your Go-To Guide for Designing 3D Models for FDM Printing – Wuxn 3D

Any ideas what causes these wrinkles on flat surfaces? : r/ender3

adhesion - FDM printer first layer infill swell upward - 3D Printing Stack Exchange

Dealing with Z-layer failures - General discussions - Bambu Lab Community Forum

Printing Perfect First Layers - Ultimaker Cura - Tutorial Australia

3D printing First Layer issues troubleshooting Guide

images.squarespace-cdn.com/content/v1/5d88f1f13db6