Retrograde Planets General Effects Astrology

We find that some planets in our horoscope are in retrograde usually marked as (R) besides them. Many astrologers treat them the same way as normal planetary disposition while analyzing the chart.This has given rise to wrong findings in many case. In tamil these planets in retrograde are also called as "Plantes in vagranilai". This vagram/vakram will make them behave in a different fashion. All the planets including Jupiter, Mercury,Saturn,Mars,Rahu,Kethu will have this retrograde state. Here are few details on how to analyze a planet in retrograde state :
1) Beneficial planets including Jupiter, Mercury when in retrograde will be most powerful. They will give benefits equivalent to that of in the exalted house Cancer, Virgo respectively
2) Bad planets saturn, mars,rahu,kethu when in retrograde behave more bad - Loss of wealth , sudden death, accident are some common bad effects noticed to have produced by these planets
3) Combination of retrograde planets makes them most powerful - Say jupiter in retrograde is in combination with retrograde mars. This makes both of them most powerful
4) Retrograde planets do not function same in all houses - less power in exalted house, no power in own house, better power in friend's house,best in debilitation house

5) A planet in retrograde state when occupying house of debilitation will be the most powerful