Improving a 50ohm Thru Terminator for my Oscilloscope using SPICE

Video demonstrating the use of SPICE to model an 50 ohm through terminator for improved return loss. My thread from 2016 showing modified terminators: https://www.eevblog.com/forum/testgear/pasternack-pe6008-50-thru-term/msg947602/#msg947602 Graybeard's thread from 2019 including link to their video: https://www.eevblog.com/forum/testgear/inexpenive-50-ohm-feed-through-terminations/msg2548299/#msg2548299 Lasmux DC coupled 2.7GHz Active Probe Project: https://www.eevblog.com/forum/testgear/12-ghz-active-probe-project/msg4973839/#msg4973839